Add the ability for DevTools to wrap network transactions.

content/browser/devtools/renderer_overrides_handler.h

Index: content/browser/devtools/renderer_overrides_handler.h
diff --git a/content/browser/devtools/renderer_overrides_handler.h b/content/browser/devtools/renderer_overrides_handler.h
index 0f7f8bc6cbaba0be2dc6cee53ff2024a81dfd169..6c505e67ae547e4b8ac8339720d8e29e30f98797 100644
--- a/content/browser/devtools/renderer_overrides_handler.h
+++ b/content/browser/devtools/renderer_overrides_handler.h
@@ -46,6 +46,7 @@ class CONTENT_EXPORT RendererOverridesHandler
                               double* scale);
   base::DictionaryValue* CreateScreenshotResponse(
       const std::vector<unsigned char>& png_data);
+  void UpdateNetworkState(bool offline);
 
   // DOM domain.
   scoped_refptr<DevToolsProtocol::Response>
@@ -57,6 +58,8 @@ class CONTENT_EXPORT RendererOverridesHandler
       scoped_refptr<DevToolsProtocol::Command> command);
   scoped_refptr<DevToolsProtocol::Response> ClearBrowserCookies(
       scoped_refptr<DevToolsProtocol::Command> command);
+  scoped_refptr<DevToolsProtocol::Response> EmulateNetworkConditions(
+      scoped_refptr<DevToolsProtocol::Command> command);
 
   // Page domain.
   scoped_refptr<DevToolsProtocol::Response> PageDisable(